--KEYBINDINGS
local map = vim.api.nvim_set_keymap
local opts = { noremap = true, silent = true }

-- Move to previous/next
map('n', '<A-h>', '<Cmd>BufferLineCyclePrev<CR>', opts)
map('n', '<A-l>', '<Cmd>BufferLineCycleNext<CR>', opts)
-- Re-order to previous/next
map('n', '<A-H>', '<Cmd>BufferLineMovePrev<CR>', opts)
map('n', '<A-L>', '<Cmd>BufferLineMoveNext<CR>', opts)
-- Goto buffer in position...
map('n', '<A-1>', '<Cmd>BufferLineGoToBuffer 1<CR>', opts)
map('n', '<A-2>', '<Cmd>BufferLineGoToBuffer 2<CR>', opts)
map('n', '<A-3>', '<Cmd>BufferLineGoToBuffer 3<CR>', opts)
map('n', '<A-4>', '<Cmd>BufferLineGoToBuffer 4<CR>', opts)
map('n', '<A-5>', '<Cmd>BufferLineGoToBuffer 5<CR>', opts)
map('n', '<A-6>', '<Cmd>BufferLineGoToBuffer 6<CR>', opts)
map('n', '<A-7>', '<Cmd>BufferLineGoToBuffer 7<CR>', opts)
map('n', '<A-8>', '<Cmd>BufferLineGoToBuffer 8<CR>', opts)
map('n', '<A-9>', '<Cmd>BufferLineGoToBuffer 9<CR>', opts)
-- Close buffer
map('n', '<A-c>', '<Cmd>BufferLinePickClose<CR>', opts)

-- Set bufferline's options
require("bufferline").setup({
    options = {
        mode = "buffers",
        numbers = "none",
        close_command = "bdelete! %d",
        right_mouse_command = "bdelete! %d",
        left_mouse_command = "buffer %d",
        middle_mouse_command = "bdelete! %d",
        indicator = {
            icon = "▎",
            style = "icon",
        },
        buffer_close_icon = '',
        modified_icon = '●',
        close_icon = '',
        left_trunc_marker = '',
        right_trunc_marker = '',
        max_name_length = 18,
        max_prefix_length = 15,
        truncate_names = true,
        tab_size = 18,
        diagnostics = "nvim_lsp",
        diagnostics_update_in_insert = true,
        diagnostics_indicator = function(count, level, diagnostics_dict, context)
            return "(" .. count .. ")"
        end,
        color_icons = true,
        show_buffer_icons = true,
        show_buffer_close_icons = true,
        show_buffer_default_icon = true,
        show_close_icon = true,
        show_tab_indicators = true,
        show_duplicate_prefix = true,
        persist_buffer_sort = true,
        separator_style = "slant",
        enforce_regular_tabs = true,
        always_show_bufferline = true,
        hover = {
            enabled = true,
            delay = 200,
            reveal = { 'close' }
        },
        sort_by = 'insert_after_current',
        custom_filter = function(buf_number, buf_numbers)
            -- filter out filetypes you don't want to see
            if vim.bo[buf_number].filetype ~= "" then
                return true
            end
        end,
    }
})